Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Peel the sweet potato and cut it into 1/2-inch cubes, then trim the tough woody ends off the asparagus spears.
Finely mince the garlic cloves and chop the fresh rosemary and thyme leaves.
Place the chicken breast, sweet potato cubes, and asparagus on the baking sheet in a single layer.
Drizzle the olive oil over the chicken and vegetables, then sprinkle with minced garlic, herbs, sea salt, and black pepper.
Toss the vegetables and rub the seasoning into the chicken to ensure everything is evenly coated.
Roast for 12 minutes, then remove the sheet from the oven and add the cherry tomatoes.
Return to the oven for another 10-13 minutes until the chicken reaches an internal temperature of 165°F and the potatoes are golden.
Let the chicken rest for 5 minutes before slicing to keep it moist and tender.